Trtntepohlia.} AI&JE RHODOSPERME.E. 219 



floridulum, in order to show how very slight are its distinguishing 

 characters. 



4. T. sparsa, Harv. Scattered Trentepohlia. Filaments 

 minutely tufted, scattered, sparingly branched; branches 

 spreading, unequal ; articulations twice or thrice as long as 

 broad; "capsules obovate, sessile, mostly axillary." (Carm.) 

 Callith. sparsum, Harv, in Hook. Br. Ft. v. ii. p. 348. C. flo- 

 ridulum, Lyngb. ? 



On various marine Algae. On Con/! rupestris, at Miltown Malbay ; 

 W. H. Harvey. Scarcely a line high. Distinguished from T. pur- 

 purea by its scattered habit and different habitat. 



5. T. Daviesii, Harv. Davies' Trentepohlia. Rose-red, 

 minutely tufted, much branched ; branches flexuose, scattered, 

 distant, erecto-patent, with a few erect ramuli ; apices acumi- 

 nate; articulations 3 5 times longer than broad. Callith. 

 Daviesii, Ag. Harv. in Hook. Br. Fl. v. ii. p. 348. Conf. 

 Daviesii, E. Bot. t. 2329. 



On Ceramium rubrum, at Bantry ; Miss Hutchins and Mr. JR. 

 Sail. 2 4 lines high, elegantly tufted. 



6. T. secundata, Harv. Secund Trentepohlia. Rose-red, 

 very minute, tufted, flexuose, sparingly branched; branches set 

 with short, secund, close-spreading, obtuse ramuli ; articulations 

 four times longer than broad. Callith. secundatum, Ag. Harv. 

 in Hook. Br. Fl. v. ii. p. 349. C. Daviesii, p. secundata. 

 Lyngb. Hydroph. Dan. t. 41. 



On Porphyra laciniata, Alaria esculenta, &c. A line or less in 

 height, forming minute tufts or spreading in continuous velvety patches. 

 Capsules tufted, terminal, on abbreviated ramuli. 



7. T. lanuginosa, Harv. Down-like Trentepohlia. Nearly 

 simple, exceedingly minute, brownish; ramuli short, obtuse, 

 secund ; articulations thrice as long as broad, pellucid in the 

 centre. Callith. lanuginosum, Lyngb. Harv. in Hook. Br. Fl. 

 v. ii. p. 349. Conf. lanug. Dillw. t. 45. 



On decaying filamentous Algae, especially Cer. rubrum, very com- 

 mon. The most minute of the genus. 



# * Growing in fresh water. 



8. T. pulchella, Ag. Beautiful Trentepohlia. Filaments 

 minute, virgate, tufted, much branched ; branches erect, alter- 

 nate, beset with short, opposite or secund ramuli ; articulations 

 four times as long as broad ; capsules racemose. Harv. in 

 Hook. Br. Fl. v. ii. p. 382. Conf. nana, Dillw. t. 30. (not cha- 

 racteristic.) E. Hot. t. 2585. /3. chalybea, Ag. Conf. chaly- 

 bea, Dillw. f. 91. E. Bot. t. 1666. /. J. 



In mountain streams ; growing on the naked rock, or on aquatic 

 mosses. About Killamey, Glengariff, c. ^ inch long, much 



